A peculiar variety of the last named, called "Blue John," is found only near Castleton; at the same place occurs the remarkable elastic bitumen, "elaterite."
Descriptions of the solid forms will be found in the articles on asphalt or asphaltum, albertite, elaterite, gilsonite, hatchettite and ozokerite.
ELATERITE, also termed Elastic Bitumen and Mineral Caoutchouc, a mineral hydrocarbon, which occurs at Castleton in Derbyshire, in the lead mines of Odin and elsewhere.
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